Thanks for responding so quickly. The engine light does not go when key is in on position unlike the rest of the instrument panel. I haven't pulled codes yet and I'm wondering if previous owner (private sale) might have disabled light due to recurring codes. It seems odd to me that someone would pull the bulb out so I'm wondering if there's another possible explanation or if there's a chance that the check engine light is not supposed to illuminate, even with key in on position, unless there truly is an engine issue. I read another thread where someone said that earlier model jeep check engine lights weren't triggered by key being in on position.